Atomic Fe-N4 sites on electrospun hierarchical porous carbon nanofibers as an efficient electrocatalyst for oxygen reduction reaction

查看全文 作　　者：Ruiqin [1]Zhong;Chenxu [1]Zhi;Yingxiao [2]Wu;Zibin [2]Liang;Hassina [2]Tabassum;Hao [2]Zhang;Tianjie [2]Qiu;Song [2]Gao;Jinming [2]Shi;Ruqiang [2]Zou

机构地区：[1]State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China;[2]Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials,Department of Materials Science and Engineering,College of Engineering,Peking University,Beijing J00871,China

出　　处：《Chinese Chemical Letters》索引2020年第31卷第6期,共5页

基　　金：supported by the National Natural Science Foundation of China(Nos.51772329,51972340)。 摘　　要：Porous carbon materials doped with atomically dispersed metal sites(ADMSs)are promising electrocatalysts for oxygen reduction reaction(ORR)electrocatalysis.In this work,we fabricated hierarchical porous nitrogen-doped carbon nanofibers with atomically dispersed Fe-N4 sites by carbonization of electrospinning iron-based metal-organic frameworks(MOFs)/polyacrylonitrile nanofibers for ORR electrocatalysis.Remarkably,the re sultant carbon nanofibers with atomically dispersed FeN4 sites exhibit extraordinary electrochemical performance with an onset potential of 0.994 V and a halfwave potential of 0.876 V in alkaline electrolyte,comparable to the benchmark commercial Pt/C catalyst.The high catalytic performance is originated from the unique hierarchically porous 1 D carbon structure and abundant highly active atomically dispersed Fe-N4 sites. 关键词：Atomically dispersed metal sites Metal-organic frameworks Electrospinning Oxygen reduction reaction ELECTROCATALYSIS

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Atomic Fe-N4 sites on electrospun hierarchical porous carbon nanofibers as an efficient electrocatalyst for oxygen reduction reaction

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